the grateful david letterman marked the 13th anniversary of the heart surgery that saved his life. >> very impressive names at the golden globes awards last night. they had the big golden globes show last night. former president clinton introduced the movie "lincoln," and then former senator john introduced "house of lies." julianne moore, she won for playing sarah palin. see, the foreign press realized the greatest challenge in hollywood, pretending to be a republican. so they hand out these awards. >> but i said, doctor, i'm cal calling to thank you very much. 13 years ago you saved my life. he said, well, dave, it seemed like a good idea at the time. i had five bypasses. five bypasses. yeah, that's right. who wants to fight. five bypasses or as dick cheney likes to refer to it, a checkup. a checkup. >> "early start" continues right now. >>> finally, a confession. after years of denying it, lance armstrong has told oprah what e he's always denied to the rest of the world. >>> infected by accident. a medical mistake may have exposed hundreds of war vets to hiv. >>> and danger amid th